/****************************************************************************
 *
 * Copyright 2016 Samsung Electronics All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific
 * language governing permissions and limitations under the License.
 *
 ****************************************************************************/
/*
 * Wslay - The WebSocket Library
 *
 * Copyright (c) 2011, 2012 Tatsuhiro Tsujikawa
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
#ifndef WSLAY_EVENT_H
#define WSLAY_EVENT_H

#include <tinyara/config.h>
#include <apps/netutils/wslay/wslay.h>

struct wslay_stack;
struct wslay_queue;

struct wslay_event_byte_chunk {
	uint8_t *data;
	size_t data_length;
};

struct wslay_event_imsg {
	uint8_t fin;
	uint8_t rsv;
	uint8_t opcode;
	uint32_t utf8state;
	struct wslay_queue *chunks;
	size_t msg_length;
};

enum wslay_event_msg_type {
	WSLAY_NON_FRAGMENTED,
	WSLAY_FRAGMENTED
};

struct wslay_event_omsg {
	uint8_t fin;
	uint8_t opcode;
	uint8_t rsv;
	enum wslay_event_msg_type type;

	uint8_t *data;
	size_t data_length;

	union wslay_event_msg_source source;
	wslay_event_fragmented_msg_callback read_callback;
};

struct wslay_event_frame_user_data {
	wslay_event_context_ptr ctx;
	void *user_data;
};

enum wslay_event_close_status {
	WSLAY_CLOSE_RECEIVED = 1 << 0,
	WSLAY_CLOSE_QUEUED = 1 << 1,
	WSLAY_CLOSE_SENT = 1 << 2
};

enum wslay_event_config {
	WSLAY_CONFIG_NO_BUFFERING = 1 << 0
};

struct wslay_event_context {
	/* config status, bitwise OR of enum wslay_event_config values */
	uint32_t config;
	/* maximum message length that can be received */
	uint64_t max_recv_msg_length;
	/* 1 if initialized for server, otherwise 0 */
	uint8_t server;
	/* bitwise OR of enum wslay_event_close_status values */
	uint8_t close_status;
	/* status code in received close control frame */
	uint16_t status_code_recv;
	/* status code in sent close control frame */
	uint16_t status_code_sent;
	wslay_frame_context_ptr frame_ctx;
	/* 1 if reading is enabled, otherwise 0. Upon receiving close
	   control frame this value set to 0. If any errors in read
	   operation will also set this value to 0. */
	uint8_t read_enabled;
	/* 1 if writing is enabled, otherwise 0 Upon completing sending
	   close control frame, this value set to 0. If any errors in write
	   opration will also set this value to 0. */
	uint8_t write_enabled;
	/* imsg buffer to allow interleaved control frame between
	   non-control frames. */
	struct wslay_event_imsg imsgs[2];
	/* Pointer to imsgs to indicate current used buffer. */
	struct wslay_event_imsg *imsg;
	/* payload length of frame currently being received. */
	uint64_t ipayloadlen;
	/* next byte offset of payload currently being received. */
	uint64_t ipayloadoff;
	/* error value set by user callback */
	int error;
	/* Pointer to the message currently being sent. NULL if no message
	   is currently sent. */
	struct wslay_event_omsg *omsg;
	/* Queue for non-control frames */
	struct wslay_queue /*<wslay_omsg*> */ *send_queue;
	/* Queue for control frames */
	struct wslay_queue /*<wslay_omsg*> */ *send_ctrl_queue;
	/* Size of send_queue + size of send_ctrl_queue */
	size_t queued_msg_count;
	/* The sum of message length in send_queue */
	size_t queued_msg_length;
	/* Buffer used for fragmented messages */
	uint8_t obuf[4096];
	uint8_t *obuflimit;
	uint8_t *obufmark;
	/* payload length of frame currently being sent. */
	uint64_t opayloadlen;
	/* next byte offset of payload currently being sent. */
	uint64_t opayloadoff;
	struct wslay_event_callbacks callbacks;
	struct wslay_event_frame_user_data frame_user_data;
	void *user_data;
	uint8_t allowed_rsv_bits;
};

#endif							/* WSLAY_EVENT_H */
